Gravity modification with Yukawa-type potential: dark matter and mirror gravity

@article{Berezhiani2009GravityMW,
  title={Gravity modification with Yukawa-type potential: dark matter and mirror gravity},
  author={Zurab Berezhiani and Fabrizio Nesti and Luigi Pilo and Nicola Rossi},
  journal={Journal of High Energy Physics},
  year={2009},
  volume={2009},
  pages={083-083}
}
The nature of the gravitational interaction between ordinary and dark matter is still open. Any deviation from universality or the Newtonian law also modifies the standard assumption of collisionless dark matter. On the other hand, obtaining a Yukawa-like large-distance modification of the gravitational potential is a nontrivial problem, that has so far eluded a consistent realization even at linearized level. We propose here a theory providing a Yukawa-like potential, by coupling non… 

Mirror matter, mirror gravity and galactic rotational curves

We discuss astrophysical implications of the modified gravity model in which the two matter components, ordinary and dark, couple to separate gravitational fields that mix to each other through small

Modification of the Newtonian Dynamics in ΛFRW-Cosmology an Alternative Approach to Dark Matter and Dark Energy

Modified Newtonian Dynamics (MoND) is an empirically motivated modification of Newtonian gravity at largest scales, to explain rotation curves of galaxies, as an alternative to nonbaryonic dark

Cosmology in general massive gravity theories

We study the cosmological FRW flat solutions generated in general massive gravity theories. Such a model are obtained adding to the Einstein General Relativity action a peculiar non derivative

Lorentz-breaking massive gravity in curved space

A systematic study of the different phases of Lorentz-breaking massive gravity in a curved background is performed. For tensor and vector modes, the analysis is very close to that of Minkowski space.

Matter, dark matter, and antimatter in our Universe

  • Z. Berezhiani
  • Physics
    International Journal of Modern Physics A
  • 2018
I discuss the possibility of dark matter conversion into our antimatter, assuming that a part of dark matter is represented by a hypothetical mirror matter. In the Early Universe, [Formula: see text]

Sieving the Landscape of Gravity Theories : From the Equivalence Principles to the Near-Planck Regime

This thesis focusses on three main aspects of the foundations of any theory of gravity where the gravitational field admits a geometric interpretation: (a) the principles of equivalence; (b) their

Dark halo or bigravity?

AbstractObservations show that about the $20\%$ of the Universe iscomposed by invisible (dark) matter (DM), for which manycandidates have been proposed. In particular, the anomalousbehavior of

Massive gravity: a general analysis

A bstractMassive gravity can be described by adding to the Einstein-Hilbert action a function V of metric components. By using the Hamiltonian canonical analysis, we find the most general form of V

Constraining the range of Yukawa gravity interaction from S2 star orbits II: bounds on graviton mass

Recently LIGO collaboration discovered gravitational waves [1] predicted 100 years ago by A. Einstein. Moreover, in the key paper reporting about the discovery, the joint LIGO & VIRGO team presented

References

SHOWING 1-10 OF 80 REFERENCES

Mirror matter, mirror gravity and galactic rotational curves

We discuss astrophysical implications of the modified gravity model in which the two matter components, ordinary and dark, couple to separate gravitational fields that mix to each other through small

Eddington-Born-Infeld gravity and the large scale structure of the Universe

It has been argued that a Universe governed by Eddington-Bom-Infeld gravity can be compatible with current cosmological constraints. The extra fields introduced in this theory can behave as both dark

Bigravity and Lorentz-violating massive gravity

Bigravity is a natural arena where a nonlinear theory of massive gravity can be formulated. If the interaction between the metrics f and g is nonderivative, spherically symmetric exact solutions can

Exact Spherically Symmetric Solutions in Massive Gravity

A phase of massive gravity free from pathologies can be obtained by coupling the metric to an additional spin-two field. We study the gravitational field produced by a static spherically symmetric

Astrophysical Implications of the Mirror World with Broken Mirror Parity

We discuss the physics of the mirror (shadow) world which is completely analogous to the visible one except that its `weak' scale is larger by one or two orders of magnitude than the weak scale in

Unified picture of ordinary and dark matter genesis

AbstractDark matter can be constituted by the baryons of mirror world, parallel hidden sector which has the same (or similar) microphysics as that of the observable world. We discuss a mechanism

Structure Formation with Mirror Dark Matter: CMB and LSS

In the mirror world hypothesis, the mirror baryonic component emerges as a possible dark matter candidate. An immediate question arises: how do the mirror baryons behave and what are their
...